Finger support for anesthesia injection

Abstract

The utility model discloses a finger support for anesthesia injection, and relates to the field of surgical instruments. Comprising a clamping ring and a pair of lugs symmetrically fixed to the clamping ring, the lugs extend outwards and are flush with the bottom of the clamping ring, a sinking platform used for installing a trigger button is formed on the side wall of the clamping ring, and a height difference is formed between the sinking platform and the end face where the top of the clamping ring is located. The button is installed on the sinking platform, a trigger column is arranged on the side, facing the sinking platform, of the button, a penetrating hole for the trigger column to penetrate out is formed in the sinking platform, one end of the trigger column is installed on the button, and the other end of the trigger column penetrates through the penetrating hole. And when the clamping ring is mounted on the injection host, the trigger column is in contact with a key on the host. The electronic device has the advantages of being stable in holding, good in operation feedback and not prone to being touched by mistake.

Description

Technical Field

[0001] The utility model relates to the field of surgical instruments, in particular to a finger bracket for anesthesia injection. Background Art

[0002] A handheld oral anesthesia booster is a commonly used anesthetic booster device during surgery. The design of the device is designed to match the hand-push syringe gesture, allowing doctors to continue their traditional hand-push injection method. When using this booster device, considerations must be made regarding starting and stopping the injection. Traditionally, a finger support would extend a connecting rod to activate the trigger button. However, this approach requires a strong pressure. If the pressure is too light, it can easily trigger an injection by mistake. However, if the pressure is too strong, the hand and the device will shake, resulting in an unstable injection and a poor user experience. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a finger bracket for anesthesia injection.

[0004] The utility model is implemented by the following technical solution: a finger holder for anesthesia injection, which is installed on an injection host, includes a clamping ring and a pair of ear pieces symmetrically fixed on the clamping ring, the pair of ear pieces extend outward, the ear pieces are flush with the bottom of the clamping ring, a sinking platform for mounting a trigger twist is formed on the side wall of the clamping ring, a height difference is formed between the sinking platform and the end face where the top of the clamping ring is located, the button is installed on the sinking platform, a trigger column is provided on the side of the button facing the sinking platform, a through hole is provided on the sinking platform for the trigger column to pass through, one end of the trigger column is installed on the button, and the other end of the trigger column passes through the through hole. When the clamping ring is installed on the injection host, the trigger column contacts the button on the host.

[0005] The trigger column includes an upper boost column and a lower boost column, one end of the upper boost column is connected to the button, and the other end of the upper boost column passes through the through hole and is connected to the lower boost column;

[0006] The through hole is expanded toward one end of the button to form a countersunk hole, one end of the lower booster column passes through the countersunk hole and the through hole in sequence and is connected to the upper booster column, the other end of the lower booster column is in contact with the button, and the side wall of the lower booster column placed in the countersunk hole is provided with a guide ring, the side wall of the guide ring is in contact with the side wall of the countersunk hole, and when the upper booster column pushes the lower booster column to move, the guide ring moves in the countersunk hole.

[0007] The button includes a keycap and a return spring. A positioning hole is provided on the keycap. The upper booster column is inserted into the positioning hole. The return spring is sleeved on the upper booster column and one end of the return spring abuts against the sinking platform, and the other end of the return spring abuts against the keycap.

[0008] The keycap is provided with a mounting hole on the end face facing the return spring, a boss is provided at the bottom of the mounting hole, the positioning hole is provided on the boss, and when the keycap is inserted into the upper booster column, the return spring is sleeved on the boss and the limit spring abuts between the boss and the inner wall of the mounting hole.

[0009] The injection host is provided with a mounting platform for mounting the snap ring, and the mounting platform is provided with a locking assembly. When the snap ring is sleeved on the mounting platform, the locking assembly locks the mounting platform and the snap ring.

[0010] The locking assembly includes a first locking portion and a second locking portion;

[0011] The first locking portion includes a locking post fixed to the side wall of the mounting platform, and a snap ring is provided with a slot for the locking post to engage with. The slot includes a first slot and a second slot, the first slot extending from the bottom surface of the snap ring to the top surface of the snap ring, and the second slot is provided on the side wall of the snap ring. The first slot and the second slot are connected to each other and form an L-shaped slot.

[0012] The second locking part includes a self-locking ball head, a mounting hole is provided on the mounting platform, the self-locking ball head is arranged in the mounting hole, the self-locking ball head and the bottom of the mounting hole are provided with elastic parts, and a self-locking groove is provided on the inner wall of the retaining ring corresponding to the position of the self-locking ball head.

[0013] The ear piece is provided with an anti-slip rubber strip.

[0014] Compared to the prior art, the mounting platform (i.e., the sunken platform) of the button of the present invention forms a height difference with the top surface of the retaining ring. After the button is installed, a stepped area is formed between the button and the ear. When in use, the finger can be placed in this area to contact the ear. At this time, the finger actually contacts the side of the button, that is, when not in use, the finger is placed on the ear so that the finger has support, and when in use, the finger can be moved to the end face of the button. At this time, the direction of the finger's force does not change. Therefore, even in the process of pressing the button, the finger can form a balance with the finger on the other side of the ear, and is not prone to shaking during the injection process. When not in use, the area actually contacted by the finger is the ear and the side of the button, thereby reducing the possibility of accidentally touching the button when not in use. At the same time, because the trigger column adopts a two-stage design, the key step difference is large, the step feel is obvious, and the operation feedback is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the finger bracket and the injection host in the utility model when they are installed;

[0016] Figure 2 This is a schematic cross-sectional view of the structure of the finger bracket and the injection host in the utility model when they are installed;

[0017] Figure 3 This is a schematic diagram of the structure of the finger bracket in the utility model Figure 1 ;

[0018] Figure 4 This is a schematic diagram of the structure of the finger bracket in the utility model Figure 2 ;

[0019] Figure 5 This is a schematic cross-sectional view of the structure of the finger support in the present invention;

[0020] In the figure: 1. Injection host; 11. Button; 12. Mounting table; 2. Finger bracket; 21. Snap ring; 211. Perforation; 212. Countersunk hole; 22. Ear piece; 23. Anti-slip rubber strip; 24. Sinking platform; 25. Button; 251. Keycap; 252. Return spring; 253. Boss; 26. Trigger column; 261. Upper boost column; 262. Lower boost column; 263. Guide ring; 3. Locking assembly; 31. Locking column; 32. Slot; 321. First slot; 322. Second slot; 33. Self-locking ball head; 34. Elastic member; 35. Self-locking groove. DETAILED DESCRIPTION

[0021] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] Reference Figure 1-5 , a finger holder for anesthesia injection, is installed on an injection host 1. The finger holder 2 includes a snap ring 21 and a pair of ear pieces 22 symmetrically fixed on the snap ring 21. The pair of ear pieces 22 extend outward, and the ear pieces 22 are flush with the bottom of the snap ring 21. Anti-slip rubber strips 23 are provided on the ear pieces 22 to reduce the possibility of the fingers slipping off the ear pieces 22 during gripping. During installation, the snap ring 21 is sleeved on the mounting platform 12 preset on the injection host 1 for mounting the snap ring 21. After sleeved, the snap ring 21 is locked to prevent the snap ring 21 from sliding abnormally during use. Therefore, the mounting platform 12 and the snap ring 21 are engaged and locked by a locking assembly 3.

[0023] In the present application, one implementation of the locking assembly is to include at least a first locking portion and a second locking portion. The first locking portion and the second locking portion realize at least two-point locking between the snap ring 21 and the mounting platform 12, so that the snap ring 21 forms a more stable snap-fitting and fixed relationship with the mounting platform 12. Specifically, the first locking portion includes a locking column 31 fixed on the side wall of the mounting platform 12, and a snap-fitting groove 32 for the locking column 31 to engage is provided on the snap ring 21. The snap-fitting groove 32 includes a first groove 321 and a second groove 322. The first groove 321 extends from the bottom surface of the snap ring 21 to the top surface of the snap ring 21, and the second groove 322 is provided on the side wall of the snap ring 21. The first groove 321 and the second groove 322 are connected to each other and the first groove 321 and the second groove 322 form an L-shaped snap-fitting groove 32. The second locking part includes a self-locking ball head 33. A mounting hole is opened on the mounting platform 12. The self-locking ball head 33 is arranged in the mounting hole. An elastic member 34 is provided between the self-locking ball head 33 and the bottom of the mounting hole. A self-locking groove 35 is provided on the inner wall of the retaining ring 21 at a position corresponding to the self-locking ball head 33.

[0024] During installation, first align the first groove 321 with the locking post 31 on the mounting platform 12. When the snap ring 21 is placed on the mounting platform 12, the locking post 31 can be smoothly inserted into the bottom of the first groove 321 (i.e., the connection between the first groove 321 and the second groove 322). Then, the snap ring 21 is rotated. As the snap ring 21 rotates, the locking post 31 moves toward the second groove 322 and engages with the second groove 322. When the snap ring 21 is placed on the mounting platform 12, the self-locking ball head 33 is correspondingly engaged with the self-locking groove 35. The self-locking groove 35 consists of a shallow groove and a deep groove, with a transition surface between the shallow and deep grooves. When the snap ring 21 is fitted on the mounting platform 12, the self-locking ball head 33 rests on the deep groove. As the snap ring 21 rotates, the self-locking ball head 33 rotates along the transition surface toward the deep groove. At this time, the gap between the transition surface and the self-locking ball head 33 gradually becomes smaller, and the self-locking ball head 33 is squeezed, causing the elastic member 34 to be squeezed and stored energy simultaneously. As the snap ring 21 rotates, the self-locking ball head 33 passes through the transition surface and faces the deep groove. At this time, the self-locking ball head 33 moves toward the deep groove under the force of the elastic member 34 returning to its original position, and finally makes a "click" sound, indicating that the snap ring 21 is installed in place, that is, it is engaged with the L-shaped slot 32 to fix the snap ring 21, making the fixation of the snap ring 21 to the mounting platform 12 more secure and less likely to loosen during use.

[0025] A sinking platform 24 for mounting a trigger twist is formed on the side wall of the retaining ring 21. A height difference is formed between the sinking platform 24 and the end face where the top of the retaining ring 21 is located. The button 25 is mounted on the sinking platform 24. A trigger column 26 is provided on the side of the button 25 facing the sinking platform 24. A through-hole 211 is provided on the sinking platform 24 for the trigger column 26 to pass through. One end of the trigger column 26 is mounted on the button 25 and the other end of the trigger column 26 passes through the through-hole 211. When the retaining ring 21 is mounted on the injection host 1, the trigger column 26 contacts the button 11 on the host.

[0026] After the keycap 251 is installed on the snap ring 21, the top of the snap ring 21 is flush with the keycap 251, that is, the keycap 251 compensates for the height difference between the mounting platform and the top of the snap ring 21. After the keycap 251 is installed, the ear piece 22 extends outward from the bottom of the keycap 251, that is, the keycap 251 is placed above the ear piece 22, and the outside of the keycap 251 still has a portion of the ear piece 22. When in use, if no anesthetic injection is required, the finger can be placed on the ear piece 22, and the finger will contact the ear piece 22 and the side wall of the keycap 251. The travel of the keycap 251 is actually the thickness direction of the snap ring 21, that is, it moves from the top of the snap ring 21 to the bottom of the snap ring 21. Therefore, when in use, it is necessary to press the keycap 251 from above to inject the anesthetic. When not in use, the direction of the finger's force is perpendicular to the travel direction of the keycap 251, thereby reducing the possibility of accidental touch, making it safer to use.

[0027] The trigger column 26 includes an upper booster column 261 and a lower booster column 262. One end of the upper booster column 261 is connected to the button 25, and the other end of the upper booster column 261 passes through the through-hole 211 and connects to the lower booster column 262. The through-hole 211 is expanded toward one end of the button 11 to form a counterbore 212. One end of the lower booster column 262 passes through the counterbore 212 and the through-hole 211 in sequence to connect to the upper booster column 261. The other end of the lower booster column 262 contacts the button 11. A guide ring 263 is provided on the side wall of the lower booster column 262 positioned within the counterbore 212. The side wall of the guide ring 263 contacts the side wall of the counterbore 212. When the upper booster column 261 pushes the lower booster column 262 to move, the guide ring 263 moves within the counterbore 212. The button 25 includes a keycap 251 and a return spring 252. The keycap 251 has a positioning hole, into which an upper booster post 261 is inserted. The return spring 252 is mounted on the upper booster post 261, with one end of the return spring 252 abutting against the sinking platform 24, and the other end of the return spring 252 abutting against the keycap 251. The keycap 251 has a mounting hole on the end surface facing the return spring 252. A boss 253 is provided at the bottom of the mounting hole, and a positioning hole is formed on the boss 253. When the keycap 251 is inserted into the upper booster post 261, the return spring 252 is mounted on the boss 253, and the retaining spring abuts between the boss 253 and the inner wall of the mounting hole. The trigger post 26 adopts a two-stage design, resulting in a large step difference between the key 11, a distinct step feel, and good operational feedback.

[0028] During the injection process, the movement direction of the finger is consistent with the travel direction of the keycap 251, and the direction of the force applied by the finger on the other side when contacting the corresponding ear piece 22 is actually always consistent with the travel direction of the keycap 251. The actual direction of the force applied by the finger has not changed. Therefore, even when pressing the button 25, the finger can form a balance with the finger on the other side of the ear piece 22. Therefore, during the injection process, since the entire force is in a relatively balanced state, the injection host 1 is more stable to hold during injection and is not easy to shake during the injection process.

[0029] The mounting platform (i.e., the sunken platform 24) of the button 25 of the present invention forms a height difference with the top surface of the retaining ring 21. After the button 25 is installed, a stepped area is formed between the button 25 and the tab 22. During use, a finger can be placed in this area to contact the tab 22. At this point, the finger actually contacts the side of the button 25. That is, when not in use, the finger rests on the tab 22 for support. During use, the finger can be moved to the end face of the button 25. The direction of the finger's force remains unchanged. Therefore, even when pressing the button 25, the finger maintains balance with the finger on the other tab 22, making it less likely to shake during injection. When not in use, the finger actually contacts the tab 22 and the side of the button 25, thereby reducing the possibility of accidentally touching the button 25 when not in use. Furthermore, because the trigger column 26 adopts a two-stage design, the key 11 has a large step difference, a distinct step feel, and good operational feedback.

[0030] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A finger holder for anesthesia injection, mounted on an injection device, comprising a clasp and a pair of lugs symmetrically fixed to the clasp, the pair of lugs extending outward, characterized in that: The ear piece is flush with the bottom of the snap ring, and a sunken platform for mounting the trigger twist is formed on the side wall of the snap ring. A height difference is formed between the sunken platform and the end face where the top of the snap ring is located. The button is mounted on the sunken platform, and a trigger column is provided on the side of the button facing the sunken platform. A through hole is provided on the sunken platform for the trigger column to pass through. One end of the trigger column is mounted on the button and the other end of the trigger column passes through the through hole. When the snap ring is mounted on the injection host, the trigger column contacts the button on the host.

2. The finger support for anesthesia injection according to claim 1, characterized in that: The trigger column includes an upper boost column and a lower boost column, one end of the upper boost column is connected to the button, and the other end of the upper boost column passes through the through hole and is connected to the lower boost column; The through hole is expanded toward one end of the button to form a countersunk hole, one end of the lower booster column passes through the countersunk hole and the through hole in sequence and is connected to the upper booster column, the other end of the lower booster column is in contact with the button, and the side wall of the lower booster column placed in the countersunk hole is provided with a guide ring, the side wall of the guide ring is in contact with the side wall of the countersunk hole, and when the upper booster column pushes the lower booster column to move, the guide ring moves in the countersunk hole.

3. The finger support for anesthesia injection according to claim 2, characterized in that: The button includes a keycap and a return spring. A positioning hole is provided on the keycap. The upper booster column is inserted into the positioning hole. The return spring is sleeved on the upper booster column and one end of the return spring abuts against the sinking platform, and the other end of the return spring abuts against the keycap.

4. The finger support for anesthesia injection according to claim 3, characterized in that: The keycap is provided with a mounting hole on the end face facing the return spring, a boss is provided at the bottom of the mounting hole, the positioning hole is provided on the boss, and when the keycap is inserted into the upper booster column, the return spring is sleeved on the boss and the limit spring abuts between the boss and the inner wall of the mounting hole.

5. A finger support for anesthesia injection according to any one of claims 1 to 4, characterized in that: The injection host is provided with a mounting platform for mounting the snap ring, and the mounting platform is provided with a locking assembly. When the snap ring is sleeved on the mounting platform, the locking assembly locks the mounting platform and the snap ring.

6. The finger support for anesthesia injection according to claim 5, characterized in that: The locking assembly includes a first locking portion and a second locking portion; The first locking portion includes a locking post fixed to the side wall of the mounting platform, and a snap ring is provided with a slot for the locking post to engage with. The slot includes a first slot and a second slot, the first slot extending from the bottom surface of the snap ring to the top surface of the snap ring, and the second slot is provided on the side wall of the snap ring. The first slot and the second slot are connected to each other and form an L-shaped slot. The second locking part includes a self-locking ball head, a mounting hole is provided on the mounting platform, the self-locking ball head is arranged in the mounting hole, the self-locking ball head and the bottom of the mounting hole are provided with elastic parts, and a self-locking groove is provided on the inner wall of the retaining ring corresponding to the position of the self-locking ball head.

7. The finger support for anesthesia injection according to claim 1, characterized in that: The ear piece is provided with an anti-slip rubber strip.

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